/Engine/Plugins/Runtime/Metasound/Source/MetasoundGraphCore/Public/MetasoundNodeInterface.h
Make a FNodeDataVertexKey from anFOutputDataSource.
namespace Metasound { [FNodeDataVertexKey](API\Plugins\MetasoundGraphCore\FNodeDataVertexKey) Metasound::MakeSourceDataVertexKey ( const [FOutputDataSource](API\Plugins\MetasoundGraphCore\FOutputDataSource) & InSource ) }